Phormidium etoshii sp. nov. (Oscillatoriales, Cyanobacteria) described from the Etosha Pan, Namibia, based on morphological, molecular and ecological features.

An edaphic, filamentous, nonheterocytous cyanobacterium was collected from the Etosha Pan, Namibia. Based on multilocus sequencing of the 16S rRNA gene, beta and alpha subunits (cpcBA-IGS) of the phycocyanin operon and morphological and ecological features, we describe the new species Phormidium etoshii (Oscillatoriales). The taxon was differentiated from the phylogenetically closest taxa in morphological features and ecology.